Lamp



Aug. 14, 1928.

E. P. MCOLVIN LAMP Filed. April 22, 1925 ATTORN EY WITNESS:

- umraasraras PA ENT.O F CE"-- Patented Aug. 14, 1928.

nnwnnn "r. McoLvIn, or wonr sumnr'r, wnsrvrnemmi LAMP.

Applicationfiled April 1925 Serial No 25,082. 2

It islnot uncommon for gminers to remove the gas excluding tops of their lamps when in a mine in order that they may light their pipe from the flame of the lamp, and for other unnecessary purposes. This has caused explosions with disastrous results and therefore it may be considered the object of this invention to produce a lamp for miners use in which the bowl cannot be separated from the top of the lamp without extinguishing the flame, and also of a construction that if the wick is lighted whenthe bowl is re moved from the top part of the lamp, that it cannot be replaced without the light becoming" extinguished, therefore, nothing.

could be gained by removing the bowl for the purpose of relighting it.

The inventionresides in the novel construction, combination and arrangementpf arts, a satisfactory embodiment of which being illustratedby the accompanying drawings, set forth in the following descrlptlon or pointed outwithparticularity in the appended claim A I Figure 1 is a side elevation of a miners lamp embodying my improvement, parts being broken away and parts in section.

Figure 2 is a section on line 22 of Figure 1. I

Figure 3 is a sectionalview through the upper threaded member of the improvement and the ring member which forms a shoulder therefor; I The up er gas excluding portion of the lamp is struction and is do i ated by the numeral 1 of the drawings. e posts that surround the globe 2 of the saidupper portion of the lamp are fixed to a.v barrel 3. The barrelhas' the lower portion of its bore larger than the upper portion thereof but both of the said portions of the bore are formed withthreads 4 and 5 respectively. Screwed in the upper threads there is an annulus 6 against which the lower end of the globe 2 rests. The annulus is integrally formed with a continuous flange 7 and arranged at approximately the center thereof andletin and secured to the bore of the said annulus 6, below the flange 7 there is a ring member 8. The passage between the ring and flange has received therein an. angularly out-turned flange 9 on the upper or outer end; of a: sleeve 10. "In this manner it will be seen that the sleeve is revo lubly associated with the annulus 6.

The sleeve 10 is centrally formed with an 0 any ordinary or well known conguisher.

- will fully set forth the directed flange; or rpai' titionllIon .Whose innerperiphery thereis formed what I will term an extinguishingtube 12. The

tube {12 is of the usual construction, that is,

the same comprises two connected -semi-circular members and the said tubereceives therethrough the wick tube 13, which, ofv course, is of a similar construction to the extinguisher tube. The wick tube 13 passes through and is secured to the top member 14 of fount 15 of the lamp By this it will be seen that when the fount 15 is unscrewed from the barrel 3 that the wick tube would be drawn down through extinguisher tube 12 which remains intact in the members screwed in the upper part of the barrel 3, and as the wick 'tube was drawn down through the extinguisher tube 12 the light would be extinguished. The tube 13 is ar ranged on the central partition 16 in the said member 14 and the member 14 has its outer end provided with exterior threads.

It can be seen that by the "use of the different hand threads that it will be impossible to remove the parts holding the extinguisher tube at the same time the bowl or fount is removed, as they must be turned in differentdirections rangements are to shown at A now on the market. These inlets are to protected by a gauze on barrel13 is for a shield for inlet holes A;

The flange or partition 11 in the sleeve 10 is provided with a rectangular hole 20 for the insertion of an internal igniter oflthe ordinary type. By this arrangement itis to be noted that the lamp cannot be lighted until the parts constituting the same are assembled. It is obvious that should the bowl be removed from the remainder of the lamp the wick tube passing through the extinguisher tube 12 will smother the light from the wick. Also ring 19 the same as are now in use. 'Extens1on B y when the bowl is removed the flame therer from would be smothered when the wick tube is again The construction is such that the parts constituting the same cannot be readily disassociated and assembled except by those acquaintedwith'the construction and it is believed that the. when takenin connection with the drawings advantages of my improvement to those skilled in the art to passed through the extinforegoing description which such inventions relate. The device, of course, is not to be restricted to the illustrated embodiment herein disclosed, as such changes may be made therefrom as fairly fall within the scope of what I claim.

Having described the invention, I claim In a safety miners lamp, :1 fount, an annular top member therefor exteriorly threaded adjacent its upper end, a centrally arranged partition in said top member, a wick tube rising from said partition, a barrel threaded onto said top member, an annulus threaded into the upper end of said barrel, and including an inwardly directed continuous flange constituting a support for the globe of the lamp, a sleeve arranged between said annulus and said top member and having an upwardly directed flange engaging the flange of said annulus, a centrally located partition within said sleeve, an extinguishing tube supported by said partition and receiving said wick tube, and a gauge ring surrounding said sleeve and reposing upon the partition of said top member, said top member having air inlet openings.

In testimony whereof I ailix my signature.

EDlVARD P. McOLVIN 

